(1R,3E,7S,9S,10E,12E,14R,15R)-7-((2S,3R,4E,6E,8E)-3-methoxy-4,8-dimethyl-9-(2-methyloxazol-4-yl)nona-4,6,8-trien-2-yl)-10,14-dimethyl-9-((triisopropylsilyl)-oxy)-6,16-dioxabicyclo[13.3.1]nonadeca-3,10,12-triene-5,17-dione 在
吡啶 、
氢氟酸 作用下,
以
四氢呋喃 为溶剂,
反应 9.0h,
以80%的产率得到(3E,10E,12E)-(1R,7S,9S,14R,15R,17S)-17-Hydroxy-7-[(3E,5E,7E)-(1S,2R)-2-methoxy-1,3,7-trimethyl-8-(2-methyl-oxazol-4-yl)-octa-3,5,7-trienyl]-10,14-dimethyl-9-triisopropylsilanyloxy-6,16-dioxa-bicyclo[13.3.1]nonadeca-3,10,12-trien-5-one